Detachable tire-protector



B. E. BREITWEISER..

DETACHABLE TIRE PROTECTOR.

APPLICATION FILED OCT. I9, 1920.

INVENTOR ar brei/m0 riff.'

A TTORNE Y UNITED STATES BERT E. BRETWESER, OF YVEGHTA, KANSAS.

DETCHABLE TIEE-PRTCTOR.

Application filed October 13, 1920.

.To all tti/10m t may concern Be it known that Buur E. Brunrwnisrn, a citizen ot' the United States, and resident of Wlichita, in the county of Sedgwick and State of Kansas, have invented certain new and useful :improvements in Detachable Tire-Protectors, ot which the followingv is a specification.

llhis invention relates to detachable protectors for pneumatic tires, for the purpose ot taking the wear or the road from the tire itself. Essentially my improved tire protector consists oit an annular shoe coinposed of rubber, fabric and wire vulcanized together, the edges of the shoe having beads in which are embedded ring-wires whose diameter is less than that oit' the tread of the shoe. The wire portion of the shoe also comprises a single wrapped or wound wire which is looped around the ring-wires alternately.

ln the accompanying drawing, F igure l is a half transverse section of the protector and a tire to which it is to be applied Fig. 2 shows the same tire lin side elevation and the protectorin elevation with its elements broken away to show construction; Fig. 3 is a side elevation of a portion of the device in position on a fully inflated tire; and F ig. 4 is a sectional diagram showing the relation of the shoe to the inflated tire.

Referring more in detail to the parts 1 indicates a portion ot' any pneumatic tire; 2 indicates the tread portion ot my tire protector, and 3, the side walls thereof. These portions are niade ot tire-rubber.

The sectional form oi the protector when detached, is curved, as shown on Fig. l, 0n an are of longer radius than that of the tire-s curvature-fthe latter being shown by broken lines. The tread 2 is made of any desired thickness, and preferably is dished transversely as shown, to reduce side-slipping 0n slippery pavements.

he shoe is increased in thickness graduallyfrom a point c; outward to its edge, thus forming a heavy bead 4 on each side of the shoe.

Embedded in each bead 4 is an annular ringvwire 5. |The diameter ot each ring wire is less than the median diameter of the shoe.

In the nianufactureuof the device, the two ring-wires are clamped in proper relative positions, and a pair of rubber rings 9.are placed in contact with the respective ring- Speccation of Letters Patent.

Tatented ct, il, tgl.

Serial l'o. 418,099.

wires. The position of one rubber ring is clearly shown in F ig. l. Next, a pianowire (3 is wound around the ring-wires as closely as possible, around the whole circumference ot the ring, and its ends united. Next, a. tabric-and-rubber strip 7 is wrapped spirally around the wire G, completely around the ring, the edges of the strip being lapped. A, second tabric-and-rubber strip 8 is wrapped spirally around the inner strip 7, covering the same, and its edges are lapped. The rubber body 2-3 is mold` ed about the :fabric strips, and finally the whole is vulcanized. The rubber of the strips 7, S and the rubber lling-rings 9 are softened in the process, and when cold it at heres to the wires 5 and 6.

The transverse wire G imparts strength to the shoe, and protects the tread ot the tire from being punctured by anything larger than a tack.

The vulcanized rubber rings 9 haveat least three functions: First and obviously, they constitute fillers for the otherwise ein-pty annular spaces within the loops ot the wound-wire; also, they positively hold and retain the two ring-wires in positionwhether the shoe is on or ott' a tire; further, said rubber rings prevent, or tend to prevent, friction and heating` between the ringwires and the said wire loops.

To attach this device to a tire, the tire is deliated to permit one of the beads 4 to be slipped over the tire toits inner side. lllhen the tire is inilated, the stretching of the median zone of the shoe draws the side wallsl 3 with great pressure upon the walls of the tire, causing the beads lto tit so 'closely that water can not enter between the tire and the slice.

Having described my invention, I claim as new and desire to secure by Letters Patent:

l. An annular tire-protector ot curved transverse section, and comprising a rubber body having a tread and a pair of lateral beads; ring-wires embedded in the beads,V a wound wire embedded in the rubber body and looped around the ring-wires, a pair fot rubber filling-rings vulcanized within the loops of said wound-wire and against the respective ring-wires, and a fabric. strip spirally wound around said wound wire, said strip also being embedded in the rubber body; substantially as described.

2.19m annular tire-protector of curved great Within the loops Leeeuee against the respective ring-Wires, and a 10 fabre'strp wrapped sprally around said Wound Wire, said stro also'beng embedded n the rubber body; substantially as described. v

BERT E. BRETVVESER.

lltnesses: Y

lvl. Y. CHARLES, Y `W. A. NETHERGOT. 

